<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>我是c页面</h1>
    <button>点击我回退到指令页面</button>
    <script>

        document.querySelector("button").onclick = function(){
            window.history.go(-2);
        }

    </script>
</body>

</html>